ASTROSAT CZTI

Data Quality Report

Orbit 14898

Creation date: 2024-06-27T17:01:05.140470
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_011T09_9000002202_14898cztM0_level2.evt modeM0/AS1A04_011T09_9000002202_14898cztM0_level2_quad_clean.evt
Size (bytes)583,030,080106,384,320
Size556.0 MB 101.5 MB
Events in quadrant A3,782,280701,094
Events in quadrant B5,773,993661,091
Events in quadrant C3,690,865666,468
Events in quadrant D3,901,004671,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159783
B0222362
C0156652
D0166522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74931351.801682%
B749394112.558388%
C74931011.347925%
D74931271.694915%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7754 7495 4 4 0.05% 0.05%
B 7754 7495 496 496 6.40% 6.62%
C 7754 7495 0 0 0.00% 0.00%
D 7754 7495 46 46 0.59% 0.61%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 109600 575.84 929 906 188.8
A 14 237 60800 317.31 929 906 188.8
A 9 143 20340 102.96 929 906 188.8
B 3 64 1384830 8489.2 848 824 163.0
B 10 16 762179 4669.99 848 824 163.0
B 0 189 164875 1006.25 848 824 163.0
C 3 233 186233 890.33 897 898 208.2
C 13 61 6262 25.77 897 898 208.2
C 10 22 3738 13.64 897 898 208.2
D 7 254 327013 1512.71 904 882 215.6
D 10 199 64251 293.93 904 882 215.6
D 13 104 46410 211.17 904 882 215.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter